#!/bin/sh -e

## settings

DIR="$(basename "$PWD")"
TITLE="$(basename "$PWD" |sed 's/unlisted-//g' | cut -d"_" -f2- | tr '-' ' ')"
PROCS="$(sysctl -n hw.ncpuonline)"

mkdir -p thm mid

echo "<h1>$TITLE</h1>"
[ -f index.txt ] && cat index.txt

echo "<p>"
echo "  <table class=\"photo-table\">"
echo "    <tr>"

_count=0
find * -maxdepth 0 -mindepth 0 -type f \( -iname "*.jpg" \
                                       -o -iname "*.jpeg" \
                                       -o -iname "*.png" \
                                       -o -iname "*.gif" \
                                       \)  \
    | sort -r | while read _file
do
    _file_thm="thm/${_file%%.*}.jpg"
    _file_mid="mid/${_file%%.*}.jpg"
    _file_html="${_file%%.*}.html"
    _file_descr="${_file%%.*}.txt"

    if [ ! -f "${_file_thm}" ]
    then
        convert -quality 73 \
             -sharpen 2x2 \
             -auto-orient \
             -define jpeg:size=440x440 \
             "$_file" \
             -thumbnail 220x220^ \
             -gravity center \
             -extent 220x220 \
             "${_file_thm}" \
             >/dev/null 2>&1 &
    fi

    if [ ! -f "${_file_mid}" ]
    then
        convert -quality 83 \
             -sharpen 2x2 \
             -auto-orient \
             -define jpeg:size=1440x2400 \
             "$_file" \
             -thumbnail 720x1600 \
             "${_file_mid}" \
             >/dev/null 2>&1 &
    fi
    if [ ! -f "${_file_html}" ]
    then
        echo "<h1>$TITLE</h1>" > "${_file_html}"
        echo "<p>File: ${_file} (<a href=\"/photos/$DIR/${_file}\" target=_blank>Open Original</a>)</p>" >> "${_file_html}"
        echo "<p><img class=\"photo-mid\" alt=\"Preview Image ${_count}\" src=\"/photos/$DIR/${_file_mid}\"></p>" >> "${_file_html}"
        [ -f "${_file_descr}" ] && cat "${_file_descr}" >> "${_file_html}"
        echo "<p><a href=index.html>Back to Index</a></p>" >> "${_file_html}"
    fi

    [ $_count -ne 0 ] \
        && [ $(( _count % 3 )) -eq 0  ] \
            && echo "    </tr><tr>"

    echo "      <td class=\"photo-td\" ><a href=\"/photos/$DIR/${_file_html}\"><img alt=\"Thumbnail Image ${_count}\" class=\"photo-img\" src=\"${_file_thm}\"></a></td>"

    # increase file counter
    _count=$(( _count + 1))

    while [ $(pgrep convert | wc -l) -gt $PROCS ]
    do sleep 0.3; done

done

# fill missing columns
for i in $(( _count % 3 ))
do
    echo "      <td class=\"photo-td\" >&nbsp;</td>"
done

echo "    </tr>"
echo "  </table>"
echo "</p>"

echo "<p><a href=../index.html>Back to the gallery index</a></p>"
echo "section: photos" > dir.meta

wait

# it looks like wait doesn't catch processes spawned
# in a subshell. So we check explicitely for running
# convert processes. XXX
while [ $(pgrep convert | wc -l) -ge 1 ]
do sleep 1; done